2V0-21.23 Question 52
Single answerA financial organization is hosting a critical, transaction-processing application within their VMware vSphere environment. The application has a strict requirement for zero data loss and cannot tolerate downtime, even during hardware failures. Which use case would justify enabling VMware Fault Tolerance (FT) for this application?
- A
The application is highly latency-sensitive and requires predictable performance.
- B
The application is mission-critical, and any downtime or data loss is unacceptable.
- C
The application requires multiple CPUs and high computational power workloads.
- D
The application can tolerate brief interruptions but requires fast recovery using backups.
Show answer and explanation
Correct answer: B
Explanation
VMware Fault Tolerance is specifically designed for workloads that are mission-critical and cannot tolerate any downtime or data loss. It achieves this by maintaining a secondary replica of the virtual machine that is continuously synchronized with the primary VM. In the event of a hardware failure, the secondary VM seamlessly takes over, ensuring uninterrupted service.
- A. Incorrect.
While FT provides zero downtime, it is not typically used solely for latency-sensitive applications. Predictable performance is not a primary use case for FT.
- B. Correct.
This is the correct answer because VMware Fault Tolerance ensures zero downtime and no data loss by maintaining a synchronized replica of the virtual machine on another host.
- C. Incorrect.
VMware FT has limitations on the number of CPUs it supports, so it is not suitable for high computational power workloads requiring many CPUs.
- D. Incorrect.
VMware FT is designed to ensure zero downtime, not to recover from failures after they occur. Applications requiring fast recovery using backups are better suited for solutions like vSphere Replication or traditional backup and recovery tools.